Mar. 23 at 1:15 PM
$VALN 07:34 AM EDT, 03/23/2026 (MT Newswires) -- Pfizer (PFE) and Valneva (VALN) said Monday that their investigational vaccine candidate LB6V against outdoor Lyme disease reduced the rate of confirmed cases by 73.2% compared with placebo in a phase 3 clinical study.
The efficacy result came 28 days after the fourth dose in the second season of the study, the companies said.
Meanwhile, an efficacy of 74.8% in preventing Lyme disease was observed a day after the fourth dose in the second season of the trial, the companies said.
"Fewer than anticipated" infections were accrued over the study period, and Pfizer is planning further regulatory submissions for the vaccine candidate, the companies added.
LB6V is being jointly developed by Pfizer and Valneva